race gas?

[jcs327]

I am tearing down my 2001 400ex this winter and going with a 11:1 high comp 416 kit. Do I need to run race gas such as turbo blue? I used to burn aviation fuel that is 110 octane in my 250r. Would this hurt my 416?

no u dont need race gas...as long as the race gas you run is not oxygenated it will not hurt ur engine...a little oxygen may not hurt either...and what do u mean by avaition...do u mean aircraft?...if so that is not a good idea...that fuel is made especially for high altitudes...so it would not be good to run that in your bike

[stupid driver]

It all depends on if your engine is pinging when you run it. If it starts to ping, run 50/50 w/ race gas. If it is still pinging after this, run strait race gas. I run 50/50 in mine, and it hasnt pinged yet. And boy o boy does that stuff smell good too :D

[L.Vegas400]

i run about half and half in mine. $3.95 a gallon for the good smell is kinda steep.

[chrisp333]

i have a 416 11 - 1 as well and some other work done. i run 5050
112\92 and it runs great. stupid is right it smell awesome. :blah:

[trailburner]

I run 50/50.......my riding buds love the smell..I guess thats why there allways behind me......:rolleyes:

[Glamis400ex]

I run 50/50... pump with VP C-12. I could probaby get away with a little lower ratio of race gas, but that way its easy to mix.

Glamis

[Britt]

You really shouldn't run more octane than your engine requires. The higher octane (the ability of fuel to resist pre-detination) actually has a slower flame front. If you run a higher octane than you really need, than you are actually reducing your performance and paying more money at the same time. There are some advantages to running a leaded (tetra-ethel lead) however. It does provide a lubricant to your valve guides and cylinder. I run a 50/50 mix of avgas (100ll) to 92 octane unleaded. If you use the same testing method for avgas as you do pump fuel (r+m)/2, than 100ll is actually closer to 108 actane. Hope this helps!!!

Britt

[Glamis400ex]

50:50 mix of VP C12 and 91 pump is 99.5 octane. Like I said earlier, I could probably get away with a 1:4 ratio which would be 94.5 octane. I only run in the dunes and that sand really sucks the HP from the bike making it run hotter, so I'm OK with a little added octane. Every motor builder I've talked to says somewhere around 100 octane is real good for a 416/440 w/ high compression piston.

Now that I think about it, if I change my ratio of race gas and pump fuel from 50:50 to 1:4, would that affect my jetting?

Glamis